[PARPORT] HP5100C slower than under M$ ...

Michael Eyrich (michey@prz.tu-berlin.de)
Wed, 19 Jan 2000 11:38:06 +0100 (CET)


My scanner is much slower while scanning under linux than it is under
windows; even lineart scans at 100 dpi aren't scanned in one run but
the scanner repositions every few seconds.

Adding dma to to the parport driver as well as forcing to ECP (BIOS)
didn't help anything.

Any ideas, how to improve the speed? I didn't find anything in the
archives, but maybe I did the wrong search ... any hints appreciated!


kernel version: 2.2.13
scanimage (sane) 1.0.1

: cat /proc/parport/0/hardware
base: 0x378
irq: 7
dma: 3

kernel: parport0: PC-style at 0x378, irq 7, dma 3 [SPP,ECP,ECPPS2]
kernel: 0x278: CTR: wrote 0x0c, read 0xff
kernel: 0x278: DATA: wrote 0xaa, read 0xff
kernel: parport1: PC-style at 0x278 [SPP,PS2]

kernel: ppSCSI 0.91 (0.91) installed
kernel: epst.1: epst 0.91 (0.91), Shuttle EPST at 0x378 mode 2 (PS/2)
 dly 1 nice 0 sg 16
kernel: scsi1 : epst
kernel: scsi : 2 hosts.
kernel: Vendor: HP Model: C5190A Rev: 3740
kernel: Type: Processor ANSI SCSI revision: 02
kernel: Detected scsi generic sgh at scsi1, channel 0, id 0, lun 0
kernel: lp0: using parport0 (interrupt-driven).
kernel: lp1: using parport1 (polling).

Michael Eyrich                                        PRZ,  TU-Berlin
michey@prz.tu-berlin.de                               meyrich@acm.org
 Key fingerprint =  61 7A D6 6E B8 F2 ED 64  23 5D 06 D0 40 1D 12 77

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This archive was generated by hypermail 2.0b3 on Wed 19 Jan 2000 - 05:56:09 EST